Double Free Race Vulnerability in cifs Package

Kernel Updated 02 Oct 2025

Summary

18/03/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000879: cifs: fix double free race when mount fails in cifs_get_root(). Affects Kernel versions < e208668ef7ba23efcbf76a8200cab8deee501c4d. No fix is published. How to fix ↓

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Background

The cifs package is a component of the Linux Kernel ecosystem. It provides support for the Common Internet File System (CIFS), which allows Linux systems to access files and resources on remote Windows servers. The cifs_get_root() function is responsible for mounting CIFS shares and retrieving the root directory. However, a vulnerability exists in this function that can lead to a double free race condition when the mount operation fails.

Vulnerability Detail

The double free race vulnerability in cifs_get_root() occurs when there is a race condition during the handling of a failed mount operation. This can be exploited by an attacker to cause a use-after-free condition, potentially leading to arbitrary code execution or a system crash. The vulnerability was discovered in the Linux Kernel and has a CVSS score of X.X. It has been fixed in Linux Kernel version v5.4.183 by commit e208668ef7ba23efcbf76a8200cab8deee501c4d.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no known workaround for this vulnerability. It is crucial to update the Linux Kernel to the fixed version as soon as possible.

Conclusion

The double free race vulnerability in the cifs package can be mitigated by updating the Linux Kernel to version v5.4.183 or later. It is crucial to apply this update to ensure the security and stability of the system. For further support on vulnerability remediation, you can contact DevNack.com.

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